/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2021 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.calculateSHA384 = calculateSHA384;
exports.PDF20 = exports.PDF17 = exports.CipherTransformFactory = exports.calculateSHA512 = exports.calculateSHA256 = exports.calculateMD5 = exports.ARCFourCipher = exports.AES256Cipher = exports.AES128Cipher = void 0;

var _util = require("../shared/util.js");

var _primitives = require("./primitives.js");

var _decrypt_stream = require("./decrypt_stream.js");

class ARCFourCipher {
  constructor(key) {
    this.a = 0;
    this.b = 0;
    const s = new Uint8Array(256);
    const keyLength = key.length;

    for (let i = 0; i < 256; ++i) {
      s[i] = i;
    }

    for (let i = 0, j = 0; i < 256; ++i) {
      const tmp = s[i];
      j = j + tmp + key[i % keyLength] & 0xff;
      s[i] = s[j];
      s[j] = tmp;
    }

    this.s = s;
  }

  encryptBlock(data) {
    let a = this.a,
        b = this.b;
    const s = this.s;
    const n = data.length;
    const output = new Uint8Array(n);

    for (let i = 0; i < n; ++i) {
      a = a + 1 & 0xff;
      const tmp = s[a];
      b = b + tmp & 0xff;
      const tmp2 = s[b];
      s[a] = tmp2;
      s[b] = tmp;
      output[i] = data[i] ^ s[tmp + tmp2 & 0xff];
    }

    this.a = a;
    this.b = b;
    return output;
  }

  decryptBlock(data) {
    return this.encryptBlock(data);
  }

  encrypt(data) {
    return this.encryptBlock(data);
  }

}

exports.ARCFourCipher = ARCFourCipher;

const calculateMD5 = function calculateMD5Closure() {
  const r = new Uint8Array([7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21]);
  const k = new Int32Array([-680876936, -389564586, 606105819, -1044525330, -176418897, 1200080426, -1473231341, -45705983, 1770035416, -1958414417, -42063, -1990404162, 1804603682, -40341101, -1502002290, 1236535329, -165796510, -1069501632, 643717713, -373897302, -701558691, 38016083, -660478335, -405537848, 568446438, -1019803690, -187363961, 1163531501, -1444681467, -51403784, 1735328473, -1926607734, -378558, -2022574463, 1839030562, -35309556, -1530992060, 1272893353, -155497632, -1094730640, 681279174, -358537222, -722521979, 76029189, -640364487, -421815835, 530742520, -995338651, -198630844, 1126891415, -1416354905, -57434055, 1700485571, -1894986606, -1051523, -2054922799, 1873313359, -30611744, -1560198380, 1309151649, -145523070, -1120210379, 718787259, -343485551]);

  function hash(data, offset, length) {
    let h0 = 1732584193,
        h1 = -271733879,
        h2 = -1732584194,
        h3 = 271733878;
    const paddedLength = length + 72 & ~63;
    const padded = new Uint8Array(paddedLength);
    let i, j;

    for (i = 0; i < length; ++i) {
      padded[i] = data[offset++];
    }

    padded[i++] = 0x80;
    const n = paddedLength - 8;

    while (i < n) {
      padded[i++] = 0;
    }

    padded[i++] = length << 3 & 0xff;
    padded[i++] = length >> 5 & 0xff;
    padded[i++] = length >> 13 & 0xff;
    padded[i++] = length >> 21 & 0xff;
    padded[i++] = length >>> 29 & 0xff;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    const w = new Int32Array(16);

    for (i = 0; i < paddedLength;) {
      for (j = 0; j < 16; ++j, i += 4) {
        w[j] = padded[i] | padded[i + 1] << 8 | padded[i + 2] << 16 | padded[i + 3] << 24;
      }

      let a = h0,
          b = h1,
          c = h2,
          d = h3,
          f,
          g;

      for (j = 0; j < 64; ++j) {
        if (j < 16) {
          f = b & c | ~b & d;
          g = j;
        } else if (j < 32) {
          f = d & b | ~d & c;
          g = 5 * j + 1 & 15;
        } else if (j < 48) {
          f = b ^ c ^ d;
          g = 3 * j + 5 & 15;
        } else {
          f = c ^ (b | ~d);
          g = 7 * j & 15;
        }

        const tmp = d,
              rotateArg = a + f + k[j] + w[g] | 0,
              rotate = r[j];
        d = c;
        c = b;
        b = b + (rotateArg << rotate | rotateArg >>> 32 - rotate) | 0;
        a = tmp;
      }

      h0 = h0 + a | 0;
      h1 = h1 + b | 0;
      h2 = h2 + c | 0;
      h3 = h3 + d | 0;
    }

    return new Uint8Array([h0 & 0xFF, h0 >> 8 & 0xFF, h0 >> 16 & 0xFF, h0 >>> 24 & 0xFF, h1 & 0xFF, h1 >> 8 & 0xFF, h1 >> 16 & 0xFF, h1 >>> 24 & 0xFF, h2 & 0xFF, h2 >> 8 & 0xFF, h2 >> 16 & 0xFF, h2 >>> 24 & 0xFF, h3 & 0xFF, h3 >> 8 & 0xFF, h3 >> 16 & 0xFF, h3 >>> 24 & 0xFF]);
  }

  return hash;
}();

exports.calculateMD5 = calculateMD5;

class Word64 {
  constructor(highInteger, lowInteger) {
    this.high = highInteger | 0;
    this.low = lowInteger | 0;
  }

  and(word) {
    this.high &= word.high;
    this.low &= word.low;
  }

  xor(word) {
    this.high ^= word.high;
    this.low ^= word.low;
  }

  or(word) {
    this.high |= word.high;
    this.low |= word.low;
  }

  shiftRight(places) {
    if (places >= 32) {
      this.low = this.high >>> places - 32 | 0;
      this.high = 0;
    } else {
      this.low = this.low >>> places | this.high << 32 - places;
      this.high = this.high >>> places | 0;
    }
  }

  shiftLeft(places) {
    if (places >= 32) {
      this.high = this.low << places - 32;
      this.low = 0;
    } else {
      this.high = this.high << places | this.low >>> 32 - places;
      this.low <<= places;
    }
  }

  rotateRight(places) {
    let low, high;

    if (places & 32) {
      high = this.low;
      low = this.high;
    } else {
      low = this.low;
      high = this.high;
    }

    places &= 31;
    this.low = low >>> places | high << 32 - places;
    this.high = high >>> places | low << 32 - places;
  }

  not() {
    this.high = ~this.high;
    this.low = ~this.low;
  }

  add(word) {
    const lowAdd = (this.low >>> 0) + (word.low >>> 0);
    let highAdd = (this.high >>> 0) + (word.high >>> 0);

    if (lowAdd > 0xffffffff) {
      highAdd += 1;
    }

    this.low = lowAdd | 0;
    this.high = highAdd | 0;
  }

  copyTo(bytes, offset) {
    bytes[offset] = this.high >>> 24 & 0xff;
    bytes[offset + 1] = this.high >> 16 & 0xff;
    bytes[offset + 2] = this.high >> 8 & 0xff;
    bytes[offset + 3] = this.high & 0xff;
    bytes[offset + 4] = this.low >>> 24 & 0xff;
    bytes[offset + 5] = this.low >> 16 & 0xff;
    bytes[offset + 6] = this.low >> 8 & 0xff;
    bytes[offset + 7] = this.low & 0xff;
  }

  assign(word) {
    this.high = word.high;
    this.low = word.low;
  }

}

const calculateSHA256 = function calculateSHA256Closure() {
  function rotr(x, n) {
    return x >>> n | x << 32 - n;
  }

  function ch(x, y, z) {
    return x & y ^ ~x & z;
  }

  function maj(x, y, z) {
    return x & y ^ x & z ^ y & z;
  }

  function sigma(x) {
    return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22);
  }

  function sigmaPrime(x) {
    return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25);
  }

  function littleSigma(x) {
    return rotr(x, 7) ^ rotr(x, 18) ^ x >>> 3;
  }

  function littleSigmaPrime(x) {
    return rotr(x, 17) ^ rotr(x, 19) ^ x >>> 10;
  }

  const k = [0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2];

  function hash(data, offset, length) {
    let h0 = 0x6a09e667,
        h1 = 0xbb67ae85,
        h2 = 0x3c6ef372,
        h3 = 0xa54ff53a,
        h4 = 0x510e527f,
        h5 = 0x9b05688c,
        h6 = 0x1f83d9ab,
        h7 = 0x5be0cd19;
    const paddedLength = Math.ceil((length + 9) / 64) * 64;
    const padded = new Uint8Array(paddedLength);
    let i, j;

    for (i = 0; i < length; ++i) {
      padded[i] = data[offset++];
    }

    padded[i++] = 0x80;
    const n = paddedLength - 8;

    while (i < n) {
      padded[i++] = 0;
    }

    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = length >>> 29 & 0xff;
    padded[i++] = length >> 21 & 0xff;
    padded[i++] = length >> 13 & 0xff;
    padded[i++] = length >> 5 & 0xff;
    padded[i++] = length << 3 & 0xff;
    const w = new Uint32Array(64);

    for (i = 0; i < paddedLength;) {
      for (j = 0; j < 16; ++j) {
        w[j] = padded[i] << 24 | padded[i + 1] << 16 | padded[i + 2] << 8 | padded[i + 3];
        i += 4;
      }

      for (j = 16; j < 64; ++j) {
        w[j] = littleSigmaPrime(w[j - 2]) + w[j - 7] + littleSigma(w[j - 15]) + w[j - 16] | 0;
      }

      let a = h0,
          b = h1,
          c = h2,
          d = h3,
          e = h4,
          f = h5,
          g = h6,
          h = h7,
          t1,
          t2;

      for (j = 0; j < 64; ++j) {
        t1 = h + sigmaPrime(e) + ch(e, f, g) + k[j] + w[j];
        t2 = sigma(a) + maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + t1 | 0;
        d = c;
        c = b;
        b = a;
        a = t1 + t2 | 0;
      }

      h0 = h0 + a | 0;
      h1 = h1 + b | 0;
      h2 = h2 + c | 0;
      h3 = h3 + d | 0;
      h4 = h4 + e | 0;
      h5 = h5 + f | 0;
      h6 = h6 + g | 0;
      h7 = h7 + h | 0;
    }

    return new Uint8Array([h0 >> 24 & 0xFF, h0 >> 16 & 0xFF, h0 >> 8 & 0xFF, h0 & 0xFF, h1 >> 24 & 0xFF, h1 >> 16 & 0xFF, h1 >> 8 & 0xFF, h1 & 0xFF, h2 >> 24 & 0xFF, h2 >> 16 & 0xFF, h2 >> 8 & 0xFF, h2 & 0xFF, h3 >> 24 & 0xFF, h3 >> 16 & 0xFF, h3 >> 8 & 0xFF, h3 & 0xFF, h4 >> 24 & 0xFF, h4 >> 16 & 0xFF, h4 >> 8 & 0xFF, h4 & 0xFF, h5 >> 24 & 0xFF, h5 >> 16 & 0xFF, h5 >> 8 & 0xFF, h5 & 0xFF, h6 >> 24 & 0xFF, h6 >> 16 & 0xFF, h6 >> 8 & 0xFF, h6 & 0xFF, h7 >> 24 & 0xFF, h7 >> 16 & 0xFF, h7 >> 8 & 0xFF, h7 & 0xFF]);
  }

  return hash;
}();

exports.calculateSHA256 = calculateSHA256;

const calculateSHA512 = function calculateSHA512Closure() {
  function ch(result, x, y, z, tmp) {
    result.assign(x);
    result.and(y);
    tmp.assign(x);
    tmp.not();
    tmp.and(z);
    result.xor(tmp);
  }

  function maj(result, x, y, z, tmp) {
    result.assign(x);
    result.and(y);
    tmp.assign(x);
    tmp.and(z);
    result.xor(tmp);
    tmp.assign(y);
    tmp.and(z);
    result.xor(tmp);
  }

  function sigma(result, x, tmp) {
    result.assign(x);
    result.rotateRight(28);
    tmp.assign(x);
    tmp.rotateRight(34);
    result.xor(tmp);
    tmp.assign(x);
    tmp.rotateRight(39);
    result.xor(tmp);
  }

  function sigmaPrime(result, x, tmp) {
    result.assign(x);
    result.rotateRight(14);
    tmp.assign(x);
    tmp.rotateRight(18);
    result.xor(tmp);
    tmp.assign(x);
    tmp.rotateRight(41);
    result.xor(tmp);
  }

  function littleSigma(result, x, tmp) {
    result.assign(x);
    result.rotateRight(1);
    tmp.assign(x);
    tmp.rotateRight(8);
    result.xor(tmp);
    tmp.assign(x);
    tmp.shiftRight(7);
    result.xor(tmp);
  }

  function littleSigmaPrime(result, x, tmp) {
    result.assign(x);
    result.rotateRight(19);
    tmp.assign(x);
    tmp.rotateRight(61);
    result.xor(tmp);
    tmp.assign(x);
    tmp.shiftRight(6);
    result.xor(tmp);
  }

  const k = [new Word64(0x428a2f98, 0xd728ae22), new Word64(0x71374491, 0x23ef65cd), new Word64(0xb5c0fbcf, 0xec4d3b2f), new Word64(0xe9b5dba5, 0x8189dbbc), new Word64(0x3956c25b, 0xf348b538), new Word64(0x59f111f1, 0xb605d019), new Word64(0x923f82a4, 0xaf194f9b), new Word64(0xab1c5ed5, 0xda6d8118), new Word64(0xd807aa98, 0xa3030242), new Word64(0x12835b01, 0x45706fbe), new Word64(0x243185be, 0x4ee4b28c), new Word64(0x550c7dc3, 0xd5ffb4e2), new Word64(0x72be5d74, 0xf27b896f), new Word64(0x80deb1fe, 0x3b1696b1), new Word64(0x9bdc06a7, 0x25c71235), new Word64(0xc19bf174, 0xcf692694), new Word64(0xe49b69c1, 0x9ef14ad2), new Word64(0xefbe4786, 0x384f25e3), new Word64(0x0fc19dc6, 0x8b8cd5b5), new Word64(0x240ca1cc, 0x77ac9c65), new Word64(0x2de92c6f, 0x592b0275), new Word64(0x4a7484aa, 0x6ea6e483), new Word64(0x5cb0a9dc, 0xbd41fbd4), new Word64(0x76f988da, 0x831153b5), new Word64(0x983e5152, 0xee66dfab), new Word64(0xa831c66d, 0x2db43210), new Word64(0xb00327c8, 0x98fb213f), new Word64(0xbf597fc7, 0xbeef0ee4), new Word64(0xc6e00bf3, 0x3da88fc2), new Word64(0xd5a79147, 0x930aa725), new Word64(0x06ca6351, 0xe003826f), new Word64(0x14292967, 0x0a0e6e70), new Word64(0x27b70a85, 0x46d22ffc), new Word64(0x2e1b2138, 0x5c26c926), new Word64(0x4d2c6dfc, 0x5ac42aed), new Word64(0x53380d13, 0x9d95b3df), new Word64(0x650a7354, 0x8baf63de), new Word64(0x766a0abb, 0x3c77b2a8), new Word64(0x81c2c92e, 0x47edaee6), new Word64(0x92722c85, 0x1482353b), new Word64(0xa2bfe8a1, 0x4cf10364), new Word64(0xa81a664b, 0xbc423001), new Word64(0xc24b8b70, 0xd0f89791), new Word64(0xc76c51a3, 0x0654be30), new Word64(0xd192e819, 0xd6ef5218), new Word64(0xd6990624, 0x5565a910), new Word64(0xf40e3585, 0x5771202a), new Word64(0x106aa070, 0x32bbd1b8), new Word64(0x19a4c116, 0xb8d2d0c8), new Word64(0x1e376c08, 0x5141ab53), new Word64(0x2748774c, 0xdf8eeb99), new Word64(0x34b0bcb5, 0xe19b48a8), new Word64(0x391c0cb3, 0xc5c95a63), new Word64(0x4ed8aa4a, 0xe3418acb), new Word64(0x5b9cca4f, 0x7763e373), new Word64(0x682e6ff3, 0xd6b2b8a3), new Word64(0x748f82ee, 0x5defb2fc), new Word64(0x78a5636f, 0x43172f60), new Word64(0x84c87814, 0xa1f0ab72), new Word64(0x8cc70208, 0x1a6439ec), new Word64(0x90befffa, 0x23631e28), new Word64(0xa4506ceb, 0xde82bde9), new Word64(0xbef9a3f7, 0xb2c67915), new Word64(0xc67178f2, 0xe372532b), new Word64(0xca273ece, 0xea26619c), new Word64(0xd186b8c7, 0x21c0c207), new Word64(0xeada7dd6, 0xcde0eb1e), new Word64(0xf57d4f7f, 0xee6ed178), new Word64(0x06f067aa, 0x72176fba), new Word64(0x0a637dc5, 0xa2c898a6), new Word64(0x113f9804, 0xbef90dae), new Word64(0x1b710b35, 0x131c471b), new Word64(0x28db77f5, 0x23047d84), new Word64(0x32caab7b, 0x40c72493), new Word64(0x3c9ebe0a, 0x15c9bebc), new Word64(0x431d67c4, 0x9c100d4c), new Word64(0x4cc5d4be, 0xcb3e42b6), new Word64(0x597f299c, 0xfc657e2a), new Word64(0x5fcb6fab, 0x3ad6faec), new Word64(0x6c44198c, 0x4a475817)];

  function hash(data, offset, length, mode384 = false) {
    let h0, h1, h2, h3, h4, h5, h6, h7;

    if (!mode384) {
      h0 = new Word64(0x6a09e667, 0xf3bcc908);
      h1 = new Word64(0xbb67ae85, 0x84caa73b);
      h2 = new Word64(0x3c6ef372, 0xfe94f82b);
      h3 = new Word64(0xa54ff53a, 0x5f1d36f1);
      h4 = new Word64(0x510e527f, 0xade682d1);
      h5 = new Word64(0x9b05688c, 0x2b3e6c1f);
      h6 = new Word64(0x1f83d9ab, 0xfb41bd6b);
      h7 = new Word64(0x5be0cd19, 0x137e2179);
    } else {
      h0 = new Word64(0xcbbb9d5d, 0xc1059ed8);
      h1 = new Word64(0x629a292a, 0x367cd507);
      h2 = new Word64(0x9159015a, 0x3070dd17);
      h3 = new Word64(0x152fecd8, 0xf70e5939);
      h4 = new Word64(0x67332667, 0xffc00b31);
      h5 = new Word64(0x8eb44a87, 0x68581511);
      h6 = new Word64(0xdb0c2e0d, 0x64f98fa7);
      h7 = new Word64(0x47b5481d, 0xbefa4fa4);
    }

    const paddedLength = Math.ceil((length + 17) / 128) * 128;
    const padded = new Uint8Array(paddedLength);
    let i, j;

    for (i = 0; i < length; ++i) {
      padded[i] = data[offset++];
    }

    padded[i++] = 0x80;
    const n = paddedLength - 16;

    while (i < n) {
      padded[i++] = 0;
    }

    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = 0;
    padded[i++] = length >>> 29 & 0xff;
    padded[i++] = length >> 21 & 0xff;
    padded[i++] = length >> 13 & 0xff;
    padded[i++] = length >> 5 & 0xff;
    padded[i++] = length << 3 & 0xff;
    const w = new Array(80);

    for (i = 0; i < 80; i++) {
      w[i] = new Word64(0, 0);
    }

    let a = new Word64(0, 0),
        b = new Word64(0, 0),
        c = new Word64(0, 0);
    let d = new Word64(0, 0),
        e = new Word64(0, 0),
        f = new Word64(0, 0);
    let g = new Word64(0, 0),
        h = new Word64(0, 0);
    const t1 = new Word64(0, 0),
          t2 = new Word64(0, 0);
    const tmp1 = new Word64(0, 0),
          tmp2 = new Word64(0, 0);
    let tmp3;

    for (i = 0; i < paddedLength;) {
      for (j = 0; j < 16; ++j) {
        w[j].high = padded[i] << 24 | padded[i + 1] << 16 | padded[i + 2] << 8 | padded[i + 3];
        w[j].low = padded[i + 4] << 24 | padded[i + 5] << 16 | padded[i + 6] << 8 | padded[i + 7];
        i += 8;
      }

      for (j = 16; j < 80; ++j) {
        tmp3 = w[j];
        littleSigmaPrime(tmp3, w[j - 2], tmp2);
        tmp3.add(w[j - 7]);
        littleSigma(tmp1, w[j - 15], tmp2);
        tmp3.add(tmp1);
        tmp3.add(w[j - 16]);
      }

      a.assign(h0);
      b.assign(h1);
      c.assign(h2);
      d.assign(h3);
      e.assign(h4);
      f.assign(h5);
      g.assign(h6);
      h.assign(h7);

      for (j = 0; j < 80; ++j) {
        t1.assign(h);
        sigmaPrime(tmp1, e, tmp2);
        t1.add(tmp1);
        ch(tmp1, e, f, g, tmp2);
        t1.add(tmp1);
        t1.add(k[j]);
        t1.add(w[j]);
        sigma(t2, a, tmp2);
        maj(tmp1, a, b, c, tmp2);
        t2.add(tmp1);
        tmp3 = h;
        h = g;
        g = f;
        f = e;
        d.add(t1);
        e = d;
        d = c;
        c = b;
        b = a;
        tmp3.assign(t1);
        tmp3.add(t2);
        a = tmp3;
      }

      h0.add(a);
      h1.add(b);
      h2.add(c);
      h3.add(d);
      h4.add(e);
      h5.add(f);
      h6.add(g);
      h7.add(h);
    }

    let result;

    if (!mode384) {
      result = new Uint8Array(64);
      h0.copyTo(result, 0);
      h1.copyTo(result, 8);
      h2.copyTo(result, 16);
      h3.copyTo(result, 24);
      h4.copyTo(result, 32);
      h5.copyTo(result, 40);
      h6.copyTo(result, 48);
      h7.copyTo(result, 56);
    } else {
      result = new Uint8Array(48);
      h0.copyTo(result, 0);
      h1.copyTo(result, 8);
      h2.copyTo(result, 16);
      h3.copyTo(result, 24);
      h4.copyTo(result, 32);
      h5.copyTo(result, 40);
    }

    return result;
  }

  return hash;
}();

exports.calculateSHA512 = calculateSHA512;

function calculateSHA384(data, offset, length) {
  return calculateSHA512(data, offset, length, true);
}

class NullCipher {
  decryptBlock(data) {
    return data;
  }

  encrypt(data) {
    return data;
  }

}

class AESBaseCipher {
  constructor() {
    if (this.constructor === AESBaseCipher) {
      (0, _util.unreachable)("Cannot initialize AESBaseCipher.");
    }

    this._s = new Uint8Array([0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16]);
    this._inv_s = new Uint8Array([0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d]);
    this._mix = new Uint32Array([0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3]);
    this._mixCol = new Uint8Array(256);

    for (let i = 0; i < 256; i++) {
      if (i < 128) {
        this._mixCol[i] = i << 1;
      } else {
        this._mixCol[i] = i << 1 ^ 0x1b;
      }
    }

    this.buffer = new Uint8Array(16);
    this.bufferPosition = 0;
  }

  _expandKey(cipherKey) {
    (0, _util.unreachable)("Cannot call `_expandKey` on the base class");
  }

  _decrypt(input, key) {
    let t, u, v;
    const state = new Uint8Array(16);
    state.set(input);

    for (let j = 0, k = this._keySize; j < 16; ++j, ++k) {
      state[j] ^= key[k];
    }

    for (let i = this._cyclesOfRepetition - 1; i >= 1; --i) {
      t = state[13];
      state[13] = state[9];
      state[9] = state[5];
      state[5] = state[1];
      state[1] = t;
      t = state[14];
      u = state[10];
      state[14] = state[6];
      state[10] = state[2];
      state[6] = t;
      state[2] = u;
      t = state[15];
      u = state[11];
      v = state[7];
      state[15] = state[3];
      state[11] = t;
      state[7] = u;
      state[3] = v;

      for (let j = 0; j < 16; ++j) {
        state[j] = this._inv_s[state[j]];
      }

      for (let j = 0, k = i * 16; j < 16; ++j, ++k) {
        state[j] ^= key[k];
      }

      for (let j = 0; j < 16; j += 4) {
        const s0 = this._mix[state[j]];
        const s1 = this._mix[state[j + 1]];
        const s2 = this._mix[state[j + 2]];
        const s3 = this._mix[state[j + 3]];
        t = s0 ^ s1 >>> 8 ^ s1 << 24 ^ s2 >>> 16 ^ s2 << 16 ^ s3 >>> 24 ^ s3 << 8;
        state[j] = t >>> 24 & 0xff;
        state[j + 1] = t >> 16 & 0xff;
        state[j + 2] = t >> 8 & 0xff;
        state[j + 3] = t & 0xff;
      }
    }

    t = state[13];
    state[13] = state[9];
    state[9] = state[5];
    state[5] = state[1];
    state[1] = t;
    t = state[14];
    u = state[10];
    state[14] = state[6];
    state[10] = state[2];
    state[6] = t;
    state[2] = u;
    t = state[15];
    u = state[11];
    v = state[7];
    state[15] = state[3];
    state[11] = t;
    state[7] = u;
    state[3] = v;

    for (let j = 0; j < 16; ++j) {
      state[j] = this._inv_s[state[j]];
      state[j] ^= key[j];
    }

    return state;
  }

  _encrypt(input, key) {
    const s = this._s;
    let t, u, v;
    const state = new Uint8Array(16);
    state.set(input);

    for (let j = 0; j < 16; ++j) {
      state[j] ^= key[j];
    }

    for (let i = 1; i < this._cyclesOfRepetition; i++) {
      for (let j = 0; j < 16; ++j) {
        state[j] = s[state[j]];
      }

      v = state[1];
      state[1] = state[5];
      state[5] = state[9];
      state[9] = state[13];
      state[13] = v;
      v = state[2];
      u = state[6];
      state[2] = state[10];
      state[6] = state[14];
      state[10] = v;
      state[14] = u;
      v = state[3];
      u = state[7];
      t = state[11];
      state[3] = state[15];
      state[7] = v;
      state[11] = u;
      state[15] = t;

      for (let j = 0; j < 16; j += 4) {
        const s0 = state[j + 0];
        const s1 = state[j + 1];
        const s2 = state[j + 2];
        const s3 = state[j + 3];
        t = s0 ^ s1 ^ s2 ^ s3;
        state[j + 0] ^= t ^ this._mixCol[s0 ^ s1];
        state[j + 1] ^= t ^ this._mixCol[s1 ^ s2];
        state[j + 2] ^= t ^ this._mixCol[s2 ^ s3];
        state[j + 3] ^= t ^ this._mixCol[s3 ^ s0];
      }

      for (let j = 0, k = i * 16; j < 16; ++j, ++k) {
        state[j] ^= key[k];
      }
    }

    for (let j = 0; j < 16; ++j) {
      state[j] = s[state[j]];
    }

    v = state[1];
    state[1] = state[5];
    state[5] = state[9];
    state[9] = state[13];
    state[13] = v;
    v = state[2];
    u = state[6];
    state[2] = state[10];
    state[6] = state[14];
    state[10] = v;
    state[14] = u;
    v = state[3];
    u = state[7];
    t = state[11];
    state[3] = state[15];
    state[7] = v;
    state[11] = u;
    state[15] = t;

    for (let j = 0, k = this._keySize; j < 16; ++j, ++k) {
      state[j] ^= key[k];
    }

    return state;
  }

  _decryptBlock2(data, finalize) {
    const sourceLength = data.length;
    let buffer = this.buffer,
        bufferLength = this.bufferPosition;
    const result = [];
    let iv = this.iv;

    for (let i = 0; i < sourceLength; ++i) {
      buffer[bufferLength] = data[i];
      ++bufferLength;

      if (bufferLength < 16) {
        continue;
      }

      const plain = this._decrypt(buffer, this._key);

      for (let j = 0; j < 16; ++j) {
        plain[j] ^= iv[j];
      }

      iv = buffer;
      result.push(plain);
      buffer = new Uint8Array(16);
      bufferLength = 0;
    }

    this.buffer = buffer;
    this.bufferLength = bufferLength;
    this.iv = iv;

    if (result.length === 0) {
      return new Uint8Array(0);
    }

    let outputLength = 16 * result.length;

    if (finalize) {
      const lastBlock = result[result.length - 1];
      let psLen = lastBlock[15];

      if (psLen <= 16) {
        for (let i = 15, ii = 16 - psLen; i >= ii; --i) {
          if (lastBlock[i] !== psLen) {
            psLen = 0;
            break;
          }
        }

        outputLength -= psLen;
        result[result.length - 1] = lastBlock.subarray(0, 16 - psLen);
      }
    }

    const output = new Uint8Array(outputLength);

    for (let i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) {
      output.set(result[i], j);
    }

    return output;
  }

  decryptBlock(data, finalize, iv = null) {
    const sourceLength = data.length;
    const buffer = this.buffer;
    let bufferLength = this.bufferPosition;

    if (iv) {
      this.iv = iv;
    } else {
      for (let i = 0; bufferLength < 16 && i < sourceLength; ++i, ++bufferLength) {
        buffer[bufferLength] = data[i];
      }

      if (bufferLength < 16) {
        this.bufferLength = bufferLength;
        return new Uint8Array(0);
      }

      this.iv = buffer;
      data = data.subarray(16);
    }

    this.buffer = new Uint8Array(16);
    this.bufferLength = 0;
    this.decryptBlock = this._decryptBlock2;
    return this.decryptBlock(data, finalize);
  }

  encrypt(data, iv) {
    const sourceLength = data.length;
    let buffer = this.buffer,
        bufferLength = this.bufferPosition;
    const result = [];

    if (!iv) {
      iv = new Uint8Array(16);
    }

    for (let i = 0; i < sourceLength; ++i) {
      buffer[bufferLength] = data[i];
      ++bufferLength;

      if (bufferLength < 16) {
        continue;
      }

      for (let j = 0; j < 16; ++j) {
        buffer[j] ^= iv[j];
      }

      const cipher = this._encrypt(buffer, this._key);

      iv = cipher;
      result.push(cipher);
      buffer = new Uint8Array(16);
      bufferLength = 0;
    }

    this.buffer = buffer;
    this.bufferLength = bufferLength;
    this.iv = iv;

    if (result.length === 0) {
      return new Uint8Array(0);
    }

    const outputLength = 16 * result.length;
    const output = new Uint8Array(outputLength);

    for (let i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) {
      output.set(result[i], j);
    }

    return output;
  }

}

class AES128Cipher extends AESBaseCipher {
  constructor(key) {
    super();
    this._cyclesOfRepetition = 10;
    this._keySize = 160;
    this._rcon = new Uint8Array([0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d]);
    this._key = this._expandKey(key);
  }

  _expandKey(cipherKey) {
    const b = 176;
    const s = this._s;
    const rcon = this._rcon;
    const result = new Uint8Array(b);
    result.set(cipherKey);

    for (let j = 16, i = 1; j < b; ++i) {
      let t1 = result[j - 3];
      let t2 = result[j - 2];
      let t3 = result[j - 1];
      let t4 = result[j - 4];
      t1 = s[t1];
      t2 = s[t2];
      t3 = s[t3];
      t4 = s[t4];
      t1 ^= rcon[i];

      for (let n = 0; n < 4; ++n) {
        result[j] = t1 ^= result[j - 16];
        j++;
        result[j] = t2 ^= result[j - 16];
        j++;
        result[j] = t3 ^= result[j - 16];
        j++;
        result[j] = t4 ^= result[j - 16];
        j++;
      }
    }

    return result;
  }

}

exports.AES128Cipher = AES128Cipher;

class AES256Cipher extends AESBaseCipher {
  constructor(key) {
    super();
    this._cyclesOfRepetition = 14;
    this._keySize = 224;
    this._key = this._expandKey(key);
  }

  _expandKey(cipherKey) {
    const b = 240;
    const s = this._s;
    const result = new Uint8Array(b);
    result.set(cipherKey);
    let r = 1;
    let t1, t2, t3, t4;

    for (let j = 32, i = 1; j < b; ++i) {
      if (j % 32 === 16) {
        t1 = s[t1];
        t2 = s[t2];
        t3 = s[t3];
        t4 = s[t4];
      } else if (j % 32 === 0) {
        t1 = result[j - 3];
        t2 = result[j - 2];
        t3 = result[j - 1];
        t4 = result[j - 4];
        t1 = s[t1];
        t2 = s[t2];
        t3 = s[t3];
        t4 = s[t4];
        t1 ^= r;

        if ((r <<= 1) >= 256) {
          r = (r ^ 0x1b) & 0xff;
        }
      }

      for (let n = 0; n < 4; ++n) {
        result[j] = t1 ^= result[j - 32];
        j++;
        result[j] = t2 ^= result[j - 32];
        j++;
        result[j] = t3 ^= result[j - 32];
        j++;
        result[j] = t4 ^= result[j - 32];
        j++;
      }
    }

    return result;
  }

}

exports.AES256Cipher = AES256Cipher;

class PDF17 {
  checkOwnerPassword(password, ownerValidationSalt, userBytes, ownerPassword) {
    const hashData = new Uint8Array(password.length + 56);
    hashData.set(password, 0);
    hashData.set(ownerValidationSalt, password.length);
    hashData.set(userBytes, password.length + ownerValidationSalt.length);
    const result = calculateSHA256(hashData, 0, hashData.length);
    return (0, _util.isArrayEqual)(result, ownerPassword);
  }

  checkUserPassword(password, userValidationSalt, userPassword) {
    const hashData = new Uint8Array(password.length + 8);
    hashData.set(password, 0);
    hashData.set(userValidationSalt, password.length);
    const result = calculateSHA256(hashData, 0, hashData.length);
    return (0, _util.isArrayEqual)(result, userPassword);
  }

  getOwnerKey(password, ownerKeySalt, userBytes, ownerEncryption) {
    const hashData = new Uint8Array(password.length + 56);
    hashData.set(password, 0);
    hashData.set(ownerKeySalt, password.length);
    hashData.set(userBytes, password.length + ownerKeySalt.length);
    const key = calculateSHA256(hashData, 0, hashData.length);
    const cipher = new AES256Cipher(key);
    return cipher.decryptBlock(ownerEncryption, false, new Uint8Array(16));
  }

  getUserKey(password, userKeySalt, userEncryption) {
    const hashData = new Uint8Array(password.length + 8);
    hashData.set(password, 0);
    hashData.set(userKeySalt, password.length);
    const key = calculateSHA256(hashData, 0, hashData.length);
    const cipher = new AES256Cipher(key);
    return cipher.decryptBlock(userEncryption, false, new Uint8Array(16));
  }

}

exports.PDF17 = PDF17;

const PDF20 = function PDF20Closure() {
  function calculatePDF20Hash(password, input, userBytes) {
    let k = calculateSHA256(input, 0, input.length).subarray(0, 32);
    let e = [0];
    let i = 0;

    while (i < 64 || e[e.length - 1] > i - 32) {
      const combinedLength = password.length + k.length + userBytes.length,
            combinedArray = new Uint8Array(combinedLength);
      let writeOffset = 0;
      combinedArray.set(password, writeOffset);
      writeOffset += password.length;
      combinedArray.set(k, writeOffset);
      writeOffset += k.length;
      combinedArray.set(userBytes, writeOffset);
      const k1 = new Uint8Array(combinedLength * 64);

      for (let j = 0, pos = 0; j < 64; j++, pos += combinedLength) {
        k1.set(combinedArray, pos);
      }

      const cipher = new AES128Cipher(k.subarray(0, 16));
      e = cipher.encrypt(k1, k.subarray(16, 32));
      let remainder = 0;

      for (let z = 0; z < 16; z++) {
        remainder *= 256 % 3;
        remainder %= 3;
        remainder += (e[z] >>> 0) % 3;
        remainder %= 3;
      }

      if (remainder === 0) {
        k = calculateSHA256(e, 0, e.length);
      } else if (remainder === 1) {
        k = calculateSHA384(e, 0, e.length);
      } else if (remainder === 2) {
        k = calculateSHA512(e, 0, e.length);
      }

      i++;
    }

    return k.subarray(0, 32);
  }

  class PDF20 {
    hash(password, concatBytes, userBytes) {
      return calculatePDF20Hash(password, concatBytes, userBytes);
    }

    checkOwnerPassword(password, ownerValidationSalt, userBytes, ownerPassword) {
      const hashData = new Uint8Array(password.length + 56);
      hashData.set(password, 0);
      hashData.set(ownerValidationSalt, password.length);
      hashData.set(userBytes, password.length + ownerValidationSalt.length);
      const result = calculatePDF20Hash(password, hashData, userBytes);
      return (0, _util.isArrayEqual)(result, ownerPassword);
    }

    checkUserPassword(password, userValidationSalt, userPassword) {
      const hashData = new Uint8Array(password.length + 8);
      hashData.set(password, 0);
      hashData.set(userValidationSalt, password.length);
      const result = calculatePDF20Hash(password, hashData, []);
      return (0, _util.isArrayEqual)(result, userPassword);
    }

    getOwnerKey(password, ownerKeySalt, userBytes, ownerEncryption) {
      const hashData = new Uint8Array(password.length + 56);
      hashData.set(password, 0);
      hashData.set(ownerKeySalt, password.length);
      hashData.set(userBytes, password.length + ownerKeySalt.length);
      const key = calculatePDF20Hash(password, hashData, userBytes);
      const cipher = new AES256Cipher(key);
      return cipher.decryptBlock(ownerEncryption, false, new Uint8Array(16));
    }

    getUserKey(password, userKeySalt, userEncryption) {
      const hashData = new Uint8Array(password.length + 8);
      hashData.set(password, 0);
      hashData.set(userKeySalt, password.length);
      const key = calculatePDF20Hash(password, hashData, []);
      const cipher = new AES256Cipher(key);
      return cipher.decryptBlock(userEncryption, false, new Uint8Array(16));
    }

  }

  return PDF20;
}();

exports.PDF20 = PDF20;

class CipherTransform {
  constructor(stringCipherConstructor, streamCipherConstructor) {
    this.StringCipherConstructor = stringCipherConstructor;
    this.StreamCipherConstructor = streamCipherConstructor;
  }

  createStream(stream, length) {
    const cipher = new this.StreamCipherConstructor();
    return new _decrypt_stream.DecryptStream(stream, length, function cipherTransformDecryptStream(data, finalize) {
      return cipher.decryptBlock(data, finalize);
    });
  }

  decryptString(s) {
    const cipher = new this.StringCipherConstructor();
    let data = (0, _util.stringToBytes)(s);
    data = cipher.decryptBlock(data, true);
    return (0, _util.bytesToString)(data);
  }

  encryptString(s) {
    const cipher = new this.StringCipherConstructor();

    if (cipher instanceof AESBaseCipher) {
      const strLen = s.length;
      const pad = 16 - strLen % 16;
      s += String.fromCharCode(pad).repeat(pad);
      const iv = new Uint8Array(16);

      if (typeof crypto !== "undefined") {
        crypto.getRandomValues(iv);
      } else {
        for (let i = 0; i < 16; i++) {
          iv[i] = Math.floor(256 * Math.random());
        }
      }

      let data = (0, _util.stringToBytes)(s);
      data = cipher.encrypt(data, iv);
      const buf = new Uint8Array(16 + data.length);
      buf.set(iv);
      buf.set(data, 16);
      return (0, _util.bytesToString)(buf);
    }

    let data = (0, _util.stringToBytes)(s);
    data = cipher.encrypt(data);
    return (0, _util.bytesToString)(data);
  }

}

const CipherTransformFactory = function CipherTransformFactoryClosure() {
  const defaultPasswordBytes = new Uint8Array([0x28, 0xbf, 0x4e, 0x5e, 0x4e, 0x75, 0x8a, 0x41, 0x64, 0x00, 0x4e, 0x56, 0xff, 0xfa, 0x01, 0x08, 0x2e, 0x2e, 0x00, 0xb6, 0xd0, 0x68, 0x3e, 0x80, 0x2f, 0x0c, 0xa9, 0xfe, 0x64, 0x53, 0x69, 0x7a]);

  function createEncryptionKey20(revision, password, ownerPassword, ownerValidationSalt, ownerKeySalt, uBytes, userPassword, userValidationSalt, userKeySalt, ownerEncryption, userEncryption, perms) {
    if (password) {
      const passwordLength = Math.min(127, password.length);
      password = password.subarray(0, passwordLength);
    } else {
      password = [];
    }

    let pdfAlgorithm;

    if (revision === 6) {
      pdfAlgorithm = new PDF20();
    } else {
      pdfAlgorithm = new PDF17();
    }

    if (pdfAlgorithm.checkUserPassword(password, userValidationSalt, userPassword)) {
      return pdfAlgorithm.getUserKey(password, userKeySalt, userEncryption);
    } else if (password.length && pdfAlgorithm.checkOwnerPassword(password, ownerValidationSalt, uBytes, ownerPassword)) {
      return pdfAlgorithm.getOwnerKey(password, ownerKeySalt, uBytes, ownerEncryption);
    }

    return null;
  }

  function prepareKeyData(fileId, password, ownerPassword, userPassword, flags, revision, keyLength, encryptMetadata) {
    const hashDataSize = 40 + ownerPassword.length + fileId.length;
    const hashData = new Uint8Array(hashDataSize);
    let i = 0,
        j,
        n;

    if (password) {
      n = Math.min(32, password.length);

      for (; i < n; ++i) {
        hashData[i] = password[i];
      }
    }

    j = 0;

    while (i < 32) {
      hashData[i++] = defaultPasswordBytes[j++];
    }

    for (j = 0, n = ownerPassword.length; j < n; ++j) {
      hashData[i++] = ownerPassword[j];
    }

    hashData[i++] = flags & 0xff;
    hashData[i++] = flags >> 8 & 0xff;
    hashData[i++] = flags >> 16 & 0xff;
    hashData[i++] = flags >>> 24 & 0xff;

    for (j = 0, n = fileId.length; j < n; ++j) {
      hashData[i++] = fileId[j];
    }

    if (revision >= 4 && !encryptMetadata) {
      hashData[i++] = 0xff;
      hashData[i++] = 0xff;
      hashData[i++] = 0xff;
      hashData[i++] = 0xff;
    }

    let hash = calculateMD5(hashData, 0, i);
    const keyLengthInBytes = keyLength >> 3;

    if (revision >= 3) {
      for (j = 0; j < 50; ++j) {
        hash = calculateMD5(hash, 0, keyLengthInBytes);
      }
    }

    const encryptionKey = hash.subarray(0, keyLengthInBytes);
    let cipher, checkData;

    if (revision >= 3) {
      for (i = 0; i < 32; ++i) {
        hashData[i] = defaultPasswordBytes[i];
      }

      for (j = 0, n = fileId.length; j < n; ++j) {
        hashData[i++] = fileId[j];
      }

      cipher = new ARCFourCipher(encryptionKey);
      checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i));
      n = encryptionKey.length;
      const derivedKey = new Uint8Array(n);

      for (j = 1; j <= 19; ++j) {
        for (let k = 0; k < n; ++k) {
          derivedKey[k] = encryptionKey[k] ^ j;
        }

        cipher = new ARCFourCipher(derivedKey);
        checkData = cipher.encryptBlock(checkData);
      }

      for (j = 0, n = checkData.length; j < n; ++j) {
        if (userPassword[j] !== checkData[j]) {
          return null;
        }
      }
    } else {
      cipher = new ARCFourCipher(encryptionKey);
      checkData = cipher.encryptBlock(defaultPasswordBytes);

      for (j = 0, n = checkData.length; j < n; ++j) {
        if (userPassword[j] !== checkData[j]) {
          return null;
        }
      }
    }

    return encryptionKey;
  }

  function decodeUserPassword(password, ownerPassword, revision, keyLength) {
    const hashData = new Uint8Array(32);
    let i = 0;
    const n = Math.min(32, password.length);

    for (; i < n; ++i) {
      hashData[i] = password[i];
    }

    let j = 0;

    while (i < 32) {
      hashData[i++] = defaultPasswordBytes[j++];
    }

    let hash = calculateMD5(hashData, 0, i);
    const keyLengthInBytes = keyLength >> 3;

    if (revision >= 3) {
      for (j = 0; j < 50; ++j) {
        hash = calculateMD5(hash, 0, hash.length);
      }
    }

    let cipher, userPassword;

    if (revision >= 3) {
      userPassword = ownerPassword;
      const derivedKey = new Uint8Array(keyLengthInBytes);

      for (j = 19; j >= 0; j--) {
        for (let k = 0; k < keyLengthInBytes; ++k) {
          derivedKey[k] = hash[k] ^ j;
        }

        cipher = new ARCFourCipher(derivedKey);
        userPassword = cipher.encryptBlock(userPassword);
      }
    } else {
      cipher = new ARCFourCipher(hash.subarray(0, keyLengthInBytes));
      userPassword = cipher.encryptBlock(ownerPassword);
    }

    return userPassword;
  }

  const identityName = _primitives.Name.get("Identity");

  function buildObjectKey(num, gen, encryptionKey, isAes = false) {
    const key = new Uint8Array(encryptionKey.length + 9);
    const n = encryptionKey.length;
    let i;

    for (i = 0; i < n; ++i) {
      key[i] = encryptionKey[i];
    }

    key[i++] = num & 0xff;
    key[i++] = num >> 8 & 0xff;
    key[i++] = num >> 16 & 0xff;
    key[i++] = gen & 0xff;
    key[i++] = gen >> 8 & 0xff;

    if (isAes) {
      key[i++] = 0x73;
      key[i++] = 0x41;
      key[i++] = 0x6c;
      key[i++] = 0x54;
    }

    const hash = calculateMD5(key, 0, i);
    return hash.subarray(0, Math.min(encryptionKey.length + 5, 16));
  }

  function buildCipherConstructor(cf, name, num, gen, key) {
    if (!(0, _primitives.isName)(name)) {
      throw new _util.FormatError("Invalid crypt filter name.");
    }

    const cryptFilter = cf.get(name.name);
    let cfm;

    if (cryptFilter !== null && cryptFilter !== undefined) {
      cfm = cryptFilter.get("CFM");
    }

    if (!cfm || cfm.name === "None") {
      return function cipherTransformFactoryBuildCipherConstructorNone() {
        return new NullCipher();
      };
    }

    if (cfm.name === "V2") {
      return function cipherTransformFactoryBuildCipherConstructorV2() {
        return new ARCFourCipher(buildObjectKey(num, gen, key, false));
      };
    }

    if (cfm.name === "AESV2") {
      return function cipherTransformFactoryBuildCipherConstructorAESV2() {
        return new AES128Cipher(buildObjectKey(num, gen, key, true));
      };
    }

    if (cfm.name === "AESV3") {
      return function cipherTransformFactoryBuildCipherConstructorAESV3() {
        return new AES256Cipher(key);
      };
    }

    throw new _util.FormatError("Unknown crypto method");
  }

  class CipherTransformFactory {
    constructor(dict, fileId, password) {
      const filter = dict.get("Filter");

      if (!(0, _primitives.isName)(filter, "Standard")) {
        throw new _util.FormatError("unknown encryption method");
      }

      this.dict = dict;
      const algorithm = dict.get("V");

      if (!Number.isInteger(algorithm) || algorithm !== 1 && algorithm !== 2 && algorithm !== 4 && algorithm !== 5) {
        throw new _util.FormatError("unsupported encryption algorithm");
      }

      this.algorithm = algorithm;
      let keyLength = dict.get("Length");

      if (!keyLength) {
        if (algorithm <= 3) {
          keyLength = 40;
        } else {
          const cfDict = dict.get("CF");
          const streamCryptoName = dict.get("StmF");

          if ((0, _primitives.isDict)(cfDict) && (0, _primitives.isName)(streamCryptoName)) {
            cfDict.suppressEncryption = true;
            const handlerDict = cfDict.get(streamCryptoName.name);
            keyLength = handlerDict && handlerDict.get("Length") || 128;

            if (keyLength < 40) {
              keyLength <<= 3;
            }
          }
        }
      }

      if (!Number.isInteger(keyLength) || keyLength < 40 || keyLength % 8 !== 0) {
        throw new _util.FormatError("invalid key length");
      }

      const ownerPassword = (0, _util.stringToBytes)(dict.get("O")).subarray(0, 32);
      const userPassword = (0, _util.stringToBytes)(dict.get("U")).subarray(0, 32);
      const flags = dict.get("P");
      const revision = dict.get("R");
      const encryptMetadata = (algorithm === 4 || algorithm === 5) && dict.get("EncryptMetadata") !== false;
      this.encryptMetadata = encryptMetadata;
      const fileIdBytes = (0, _util.stringToBytes)(fileId);
      let passwordBytes;

      if (password) {
        if (revision === 6) {
          try {
            password = (0, _util.utf8StringToString)(password);
          } catch (ex) {
            (0, _util.warn)("CipherTransformFactory: " + "Unable to convert UTF8 encoded password.");
          }
        }

        passwordBytes = (0, _util.stringToBytes)(password);
      }

      let encryptionKey;

      if (algorithm !== 5) {
        encryptionKey = prepareKeyData(fileIdBytes, passwordBytes, ownerPassword, userPassword, flags, revision, keyLength, encryptMetadata);
      } else {
        const ownerValidationSalt = (0, _util.stringToBytes)(dict.get("O")).subarray(32, 40);
        const ownerKeySalt = (0, _util.stringToBytes)(dict.get("O")).subarray(40, 48);
        const uBytes = (0, _util.stringToBytes)(dict.get("U")).subarray(0, 48);
        const userValidationSalt = (0, _util.stringToBytes)(dict.get("U")).subarray(32, 40);
        const userKeySalt = (0, _util.stringToBytes)(dict.get("U")).subarray(40, 48);
        const ownerEncryption = (0, _util.stringToBytes)(dict.get("OE"));
        const userEncryption = (0, _util.stringToBytes)(dict.get("UE"));
        const perms = (0, _util.stringToBytes)(dict.get("Perms"));
        encryptionKey = createEncryptionKey20(revision, passwordBytes, ownerPassword, ownerValidationSalt, ownerKeySalt, uBytes, userPassword, userValidationSalt, userKeySalt, ownerEncryption, userEncryption, perms);
      }

      if (!encryptionKey && !password) {
        throw new _util.PasswordException("No password given", _util.PasswordResponses.NEED_PASSWORD);
      } else if (!encryptionKey && password) {
        const decodedPassword = decodeUserPassword(passwordBytes, ownerPassword, revision, keyLength);
        encryptionKey = prepareKeyData(fileIdBytes, decodedPassword, ownerPassword, userPassword, flags, revision, keyLength, encryptMetadata);
      }

      if (!encryptionKey) {
        throw new _util.PasswordException("Incorrect Password", _util.PasswordResponses.INCORRECT_PASSWORD);
      }

      this.encryptionKey = encryptionKey;

      if (algorithm >= 4) {
        const cf = dict.get("CF");

        if ((0, _primitives.isDict)(cf)) {
          cf.suppressEncryption = true;
        }

        this.cf = cf;
        this.stmf = dict.get("StmF") || identityName;
        this.strf = dict.get("StrF") || identityName;
        this.eff = dict.get("EFF") || this.stmf;
      }
    }

    createCipherTransform(num, gen) {
      if (this.algorithm === 4 || this.algorithm === 5) {
        return new CipherTransform(buildCipherConstructor(this.cf, this.stmf, num, gen, this.encryptionKey), buildCipherConstructor(this.cf, this.strf, num, gen, this.encryptionKey));
      }

      const key = buildObjectKey(num, gen, this.encryptionKey, false);

      const cipherConstructor = function buildCipherCipherConstructor() {
        return new ARCFourCipher(key);
      };

      return new CipherTransform(cipherConstructor, cipherConstructor);
    }

  }

  return CipherTransformFactory;
}();

exports.CipherTransformFactory = CipherTransformFactory;